PROCESS FOR PRODUCTION OF IRON SULFIDE/LITHIUM COMPOSITE - NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

Title:

PROCESS FOR PRODUCTION OF IRON SULFIDE/LITHIUM COMPOSITE

Document Type and Number:

WIPO Patent Application WO/2010/084808

Kind Code:

A1

Abstract:

Provided is a process for production of an iron sulfide/lithium composite containing at least 50mol% of either Li3Fe2S4 and/or Li2.33Fe0.67S2, which is characterized by subjecting a raw material consisting of a sulfur-containing compound, an iron-containing compound, and a lithium-containing compound to heat treatment in a moisture-free and non-oxidizing atmosphere according to an electric current sintering method. Also provided is a positive electrode active material for a lithium secondary battery, which consists of an iron sulfide/lithium composite obtained by the process. According to the process, a lithium-containing metal sulfide such as Li3Fe2S4 or Li2.33Fe0.67S2, or a composite containing the same can be easily and efficiently produced in a short time.

Inventors:

TAKEUCHI, Tomonari (8-31 Midorigaoka 1-chome, Ikeda-sh, Osaka 77, 〒5638577, JP)
竹内　友成 (〒77 大阪府池田市緑丘１丁目８番３１号　独立行政法人産業技術総合研究所　関西センター内 Osaka, 〒5638577, JP)
SAKAEBE, Hikari (8-31 Midorigaoka 1-chome, Ikeda-sh, Osaka 77, 〒5638577, JP)
栄部　比夏里 (〒77 大阪府池田市緑丘１丁目８番３１号　独立行政法人産業技術総合研究所　関西センター内 Osaka, 〒5638577, JP)
SAKAI, Tetsuo (8-31 Midorigaoka 1-chome, Ikeda-sh, Osaka 77, 〒5638577, JP)

Application Number:

JP2010/050293

Publication Date:

July 29, 2010

Filing Date:

January 13, 2010

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Assignee:

NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY (3-1 Kasumigaseki 1-chome, Chiyoda-ku Tokyo, 21, 〒1008921, JP)
独立行政法人産業技術総合研究所 (〒21 東京都千代田区霞が関一丁目３番１号 Tokyo, 〒1008921, JP)
TAKEUCHI, Tomonari (8-31 Midorigaoka 1-chome, Ikeda-sh, Osaka 77, 〒5638577, JP)
竹内　友成 (〒77 大阪府池田市緑丘１丁目８番３１号　独立行政法人産業技術総合研究所　関西センター内 Osaka, 〒5638577, JP)
SAKAEBE, Hikari (8-31 Midorigaoka 1-chome, Ikeda-sh, Osaka 77, 〒5638577, JP)
栄部　比夏里 (〒77 大阪府池田市緑丘１丁目８番３１号　独立行政法人産業技術総合研究所　関西センター内 Osaka, 〒5638577, JP)

International Classes:

C01G49/00; H01M4/58

Attorney, Agent or Firm:

Saegusa & Partners (Kitahama TNK Building, 1-7-1 Doshomachi, Chuo-ku, Osaka-sh, Osaka 45, 〒5410045, JP)

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